<template>
  <!-- 最外层的容器 -->
  <view class="my-settle-container">
    <!-- 最外层的容器 -->
    <view class="my-settle-container">
      <!-- 全选区域 -->
      <label class="radio" @click="changeAllState">
        <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
      </label>

      <!-- 合计区域 -->
      <view class="amount-box">
        合计:<text class="amount">￥{{ checkedGoodsAmount }}</text>
      </view>

      <!-- 结算按钮 -->
      <view class="btn-settle">结算({{ checkedCount }})</view>
    </view>
  </view>
</template>

<script>
import { mapGetters, mapMutations } from "vuex";
export default {
  data() {
    return {};
  },
  computed: {
    // 1. 将 total 映射到当前组件中
    ...mapGetters("m_cart", ["checkedCount", "total", "checkedGoodsAmount"]),
    // 2. 是否全选
    isFullCheck() {
      return this.total === this.checkedCount;
    },
  },
  methods: {
    ...mapMutations("m_cart", ["updateAllGoodsState"]),
    // label 的点击事件处理函数
    changeAllState() {
      // 修改购物车中所有商品的选中状态
      // !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
      this.updateAllGoodsState(!this.isFullCheck);
    },
  },
};
</script>

<style lang="scss">
.my-settle-container {
  /* 底部固定定位 */
  position: fixed;
  bottom: 0;
  left: 0;
  /* 设置宽高和背景色 */
  width: 100%;
  height: 50px;
  // 将背景色从 cyan 改为 white
  background-color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 5px;
  font-size: 14px;

  .radio {
    display: flex;
    align-items: center;
  }

  .amount {
    color: #c00000;
  }

  .btn-settle {
    height: 50px;
    min-width: 100px;
    background-color: #c00000;
    color: white;
    line-height: 50px;
    text-align: center;
    padding: 0 10px;
  }
}

</style>